<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0379-3982</journal-id>
<journal-title><![CDATA[Revista Tecnología en Marcha]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnología en Marcha]]></abbrev-journal-title>
<issn>0379-3982</issn>
<publisher>
<publisher-name><![CDATA[Instituto Tecnológico de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0379-39822023000300099</article-id>
<article-id pub-id-type="doi">10.18845/tm.v36i3.6429</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Adsorción y dosificación de Ca en suelos de Buenos Aires, Argentina]]></article-title>
<article-title xml:lang="en"><![CDATA[Adsorption and dosage of Ca in soils of Buenos Aires, Argentina]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferro]]></surname>
<given-names><![CDATA[Daniel A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Andreini]]></surname>
<given-names><![CDATA[Brian]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Merani]]></surname>
<given-names><![CDATA[Víctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Larrieu]]></surname>
<given-names><![CDATA[Luciano]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mur]]></surname>
<given-names><![CDATA[Matilde]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guilino]]></surname>
<given-names><![CDATA[Facundo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pereira]]></surname>
<given-names><![CDATA[Esteban]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cinquetti]]></surname>
<given-names><![CDATA[Tatiana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Millán]]></surname>
<given-names><![CDATA[Guillermo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Augusto Imaz]]></surname>
<given-names><![CDATA[José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de La Plata  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de La Plata  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional de La Plata.  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional de La Plata.  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Nacional de La Plata.  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad Nacional de La Plata  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,Universidad Nacional de La Plata  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af8">
<institution><![CDATA[,Universidad Nacional de La Plata  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af9">
<institution><![CDATA[,Universidad Nacional de La Plata  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="A10">
<institution><![CDATA[,The University of Sydney  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Australia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>36</volume>
<numero>3</numero>
<fpage>99</fpage>
<lpage>114</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0379-39822023000300099&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0379-39822023000300099&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0379-39822023000300099&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Las isotermas de adsorción se han utilizado para evaluar disponibilidad de nutrientes en suelo. Los suelos de la Región Pampeana se han considerado bien dotados de bases, aunque hay evidencias sobre su disminución causada por actividades agropecuarias sin reposición de nutrientes como calcio (Ca). El objetivo fue ajustar isotermas de adsorción y ecuaciones de dosificación de Ca en suelos agroproductivos de Buenos Aires. Se pesaron suelos de Bellocq, Inchausti y Belgrano y se agregaron soluciones con diferentes concentraciones de Ca. Se determinó la concentración en el equilibrio luego de su estabilización y se ajustaron los resultados según las isotermas de Langmuir, Freundlich, Van Huay y Temkin y ecuaciones de dosificación. La isoterma de Van Huay logró predecir con elevados grados de ajuste en los tres sitios (R2&gt;0,98) y solamente la ecuación de Freundlich se ajustó a Bellocq. Las ecuaciones de dosificación se ajustaron en todos los suelos, en un primer segmento con ecuaciones cuadráticas y en un segundo segmento con ecuaciones lineales. El suelo de Belgrano se diferenció de los restantes sitios en los parámetros de la ecuación de Van Huay, sugiriendo una mayor afinidad con los coloides y mayor reserva del nutriente en el corto plazo, asociado a su mayor contenido de CO, CIC y P. Los resultados encontrados pudieron ser comparado con estudios realizados en K y/o en suelos tropicales. Estos estudios sugieren la posibilidad de utilizar las isotermas de adsorción y ecuaciones de dosificación como herramientas para la toma de decisiones en fertilización en suelos de Buenos Aires.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Adsorption isotherms have been used to evaluate nutrients in soil. The soils of the Argentinean Pampas have been considered well-endowed with bases, although there is evidence of their decrease caused by agricultural activities without replacement of nutrients such as calcium (Ca). The objective was to adjust adsorption isotherms and dosage equations of Ca in agroproductive soils of Buenos Aires. Bellocq, Inchausti and Belgrano soils were weighed and solutions with different Ca concentrations were added. The equilibrium concentration was determined after stabilization and the results were adjusted according to the Langmuir, Freundlich, Van Huay and Temkin isotherms and equations of dosage. The Van Huay isotherm was able to predict with high degrees of adjustment in the three sites (R2&gt;0.98) and only the Freundlich equation was adjusted to Bellocq. The dosage equations were adjusted in all the soils, in a first segment with quadratic equations and in a second segment with linear equations. The Belgrano soil differed from the other sites in the parameters of the Van Huay equation, suggesting a greater affinity with the colloids and a greater reserve of the nutrient in the short term, associated with its higher content of CO, CEC and possibly, P. The results found could be compared with studies carried out in K and/or in tropical soils. These studies suggest the possibility of using adsorption isotherms and dosage equations as tools for decision-making in fertilization in soils of Buenos Aires.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Isotermas]]></kwd>
<kwd lng="es"><![CDATA[nutrientes]]></kwd>
<kwd lng="es"><![CDATA[bases]]></kwd>
<kwd lng="en"><![CDATA[Isotherms]]></kwd>
<kwd lng="en"><![CDATA[nutrients]]></kwd>
<kwd lng="en"><![CDATA[bases]]></kwd>
</kwd-group>
</article-meta>
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